Defend your base from incoming zombies for 10 days.Zombie coming in four line, use key A,S,D,F to shoot zombie on each line.Good eye-hand coordination are required to complete the game. For more detail, see 'How To Play' in game menu.Upgrade available for each days to strengthen and help you defend your base. Unlock achievements on each days to earn more money.. Defend your base for 10 days from zombies incoming attack. Your survival will depend on your eye-hand coordination...